Observation of terahertz radiation from higher-order two-dimensional plasmon modes in GaAs/AlGaAs single quantum wells

We have observed terahertz (THz) radiation from higher-order two-dimensional (2D) plasmon modes in GaAs/AlGaAs single quantum wells by time-resolved THz emission spectroscopy. Up to fifth-order plasmon modes are clearly resolved and the observed mode frequencies are in excellent agreement with theor...

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Bibliographic Details
Published in:Applied physics letters 1999-02, Vol.74 (7), p.1006-1008
Main Authors: Sekine, N., Yamanaka, K., Hirakawa, K., Voßebürger, M., Haring-Bolivar, P., Kurz, H.
Format: Article
Language:English
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Summary:We have observed terahertz (THz) radiation from higher-order two-dimensional (2D) plasmon modes in GaAs/AlGaAs single quantum wells by time-resolved THz emission spectroscopy. Up to fifth-order plasmon modes are clearly resolved and the observed mode frequencies are in excellent agreement with theory. Relaxation times of the 2D plasmon modes are found to be almost independent of the plasmon wave vector accessible in the present experiment.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.123437